Odpowiedź:
Szczegółowe wyjaśnienie:
18.
a)
(1 3/4)⁶ • (2/7)⁶ = (4/4 + 3/4)⁶ • (2/7)⁶ = (7/4)⁶ • (2/7)⁶ = 7⁶/4⁶ • 2⁶/7⁶ =
= 2⁶/4⁶ = 2⁶/2^12 = 2^{6 - 12 = - 6} = (1/2)⁶
b)
(0,8)⁴ : (2 2/3)⁴ = (8/10)⁴ : (6/3 + 2/3)⁴ = (4/5)⁴:(8/3)⁴ = (4/5)⁴•(3/8)⁴ =
= (4/8)⁴• (3/5)⁴ = (1/2)⁴• (3/5)⁴= (3/10)⁴
